Am I bisexual or just curious ?

Sometimes we need to fulfil something inside us. It has nothing to do with love or sexual orientation. Sometimes we just need to fit some piece into our lives that we feel is missing. Maybe the fact that you're looking for something physical with another man indicates something else is missing in your life with you and your wife. I am always troubled when people take on such a narrow view of sexuality and orientation. Being gay/bi is more than that. It encompasses exactly the same substance as being straight for that matter. The ONLY difference, ever, is that someone's partner is the same sex when you're gay and the other sex when you're straight. Maybe you need to focus on why you were looking for something with someone else (regard of WHO or WHAT that person was!)